./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0940bfd96a0950756bd3792baab28449f2ca3b13416ea5e5123f1c4a993fcef --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:17:15,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:17:15,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:17:15,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:17:15,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:17:15,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:17:15,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:17:15,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:17:15,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:17:15,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:17:15,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:17:15,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:17:15,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:17:15,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:17:15,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:17:15,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:17:15,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:17:15,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:17:15,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:17:15,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:17:15,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:17:15,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:17:15,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:17:15,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:17:15,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:17:15,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:17:15,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:17:15,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:17:15,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:17:15,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:17:15,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:17:15,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:17:15,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:17:15,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:17:15,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:17:15,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:17:15,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:17:15,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:17:15,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:17:15,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:17:15,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:17:15,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:17:15,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:17:15,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:17:15,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:17:15,938 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:17:15,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:17:15,939 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:17:15,939 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:17:15,939 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:17:15,940 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:17:15,940 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:17:15,941 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:17:15,941 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:17:15,941 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:17:15,942 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:17:15,942 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:17:15,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:17:15,943 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:17:15,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:17:15,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:17:15,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:17:15,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:17:15,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:17:15,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:17:15,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:17:15,945 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:17:15,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:17:15,945 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:17:15,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:17:15,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:17:15,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:17:15,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:17:15,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:17:15,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:17:15,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:17:15,947 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:17:15,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:17:15,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:17:15,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:17:15,948 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:17:15,949 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0940bfd96a0950756bd3792baab28449f2ca3b13416ea5e5123f1c4a993fcef [2021-11-03 05:17:16,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:17:16,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:17:16,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:17:16,258 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:17:16,259 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:17:16,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound50.c [2021-11-03 05:17:16,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/data/118e9fda0/5c4a92a5f4b94e4d854979e220761432/FLAGa1da684b8 [2021-11-03 05:17:16,828 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:17:16,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound50.c [2021-11-03 05:17:16,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/data/118e9fda0/5c4a92a5f4b94e4d854979e220761432/FLAGa1da684b8 [2021-11-03 05:17:17,202 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/data/118e9fda0/5c4a92a5f4b94e4d854979e220761432 [2021-11-03 05:17:17,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:17:17,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:17:17,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:17:17,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:17:17,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:17:17,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433d466a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17, skipping insertion in model container [2021-11-03 05:17:17,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:17:17,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:17:17,448 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound50.c[525,538] [2021-11-03 05:17:17,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:17:17,468 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:17:17,484 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound50.c[525,538] [2021-11-03 05:17:17,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:17:17,512 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:17:17,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17 WrapperNode [2021-11-03 05:17:17,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:17:17,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:17:17,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:17:17,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:17:17,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:17:17,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:17:17,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:17:17,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:17:17,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:17:17,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:17:17,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:17:17,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:17:17,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (1/1) ... [2021-11-03 05:17:17,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:17:17,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:17:17,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:17:17,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:17:17,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:17:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:17:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:17:17,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:17:17,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:17:17,904 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-03 05:17:17,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:17:17 BoogieIcfgContainer [2021-11-03 05:17:17,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:17:17,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:17:17,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:17:17,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:17:17,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:17:17" (1/3) ... [2021-11-03 05:17:17,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c56aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:17:17, skipping insertion in model container [2021-11-03 05:17:17,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:17" (2/3) ... [2021-11-03 05:17:17,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c56aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:17:17, skipping insertion in model container [2021-11-03 05:17:17,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:17:17" (3/3) ... [2021-11-03 05:17:17,920 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound50.c [2021-11-03 05:17:17,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:17:17,924 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 05:17:17,961 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:17:17,968 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:17:17,968 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-03 05:17:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:17:17,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:17,986 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:17:17,986 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:17:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash 72255189, now seen corresponding path program 1 times [2021-11-03 05:17:18,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:18,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901148179] [2021-11-03 05:17:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:18,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:18,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:17:18,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753709552] [2021-11-03 05:17:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:18,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:17:18,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:17:18,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:17:18,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 05:17:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:18,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:18,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:18,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:18,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:18,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901148179] [2021-11-03 05:17:18,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:17:18,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753709552] [2021-11-03 05:17:18,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753709552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:18,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:18,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:17:18,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551198997] [2021-11-03 05:17:18,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:18,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:18,463 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:18,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:18,522 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2021-11-03 05:17:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:17:18,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 05:17:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:18,531 INFO L225 Difference]: With dead ends: 37 [2021-11-03 05:17:18,531 INFO L226 Difference]: Without dead ends: 18 [2021-11-03 05:17:18,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-03 05:17:18,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2021-11-03 05:17:18,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-03 05:17:18,568 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2021-11-03 05:17:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:18,568 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-03 05:17:18,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-03 05:17:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:17:18,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:18,570 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-11-03 05:17:18,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 05:17:18,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-03 05:17:18,795 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:17:18,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:18,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1569875967, now seen corresponding path program 1 times [2021-11-03 05:17:18,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:18,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618858185] [2021-11-03 05:17:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:18,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:18,830 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:17:18,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062854717] [2021-11-03 05:17:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:18,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:17:18,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:17:18,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:17:18,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 05:17:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:18,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 05:17:18,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:19,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:19,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:19,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618858185] [2021-11-03 05:17:19,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:17:19,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062854717] [2021-11-03 05:17:19,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062854717] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:17:19,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [337830802] [2021-11-03 05:17:19,164 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 05:17:19,164 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:17:19,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:17:19,174 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:17:19,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:17:19,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,214 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:17:19,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:17:19,216 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:17:19,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:17:19,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 05:17:19,242 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-03 05:17:19,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 05:17:19,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:17:19,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:17:19,271 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:17:19,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,342 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:17:19,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 05:17:19,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:17:19,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:17:19,376 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:17:19,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,419 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 05:17:19,430 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:17:19,430 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 05:17:19,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-03 05:17:19,473 INFO L180 QuantifierPusher]: treesize reduction 11, result has 93.6 percent of original size [2021-11-03 05:17:19,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-03 05:17:19,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,512 INFO L185 QuantifierPusher]: treesize reduction 5, result has 96.3 percent of original size 129 [2021-11-03 05:17:19,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 292 [2021-11-03 05:17:19,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-11-03 05:17:19,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 412 [2021-11-03 05:17:19,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:19,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 05:17:19,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-03 05:17:19,976 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:19,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 05:17:19,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:20,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 05:17:20,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:20,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-03 05:17:20,017 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:17:24,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:17:24,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:17:24,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-03 05:17:24,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300751730] [2021-11-03 05:17:24,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:24,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:17:24,384 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:24,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:24,494 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-11-03 05:17:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:17:24,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 05:17:24,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:24,495 INFO L225 Difference]: With dead ends: 21 [2021-11-03 05:17:24,495 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 05:17:24,497 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:17:24,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 05:17:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 05:17:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 05:17:24,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-11-03 05:17:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:24,498 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 05:17:24,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:24,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 05:17:24,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 05:17:24,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:17:24,501 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:17:24,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:24,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:17:24,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 05:17:24,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:24,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:24,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:17:32,949 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 05:17:32,950 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-03 05:17:32,950 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-11-03 05:17:32,950 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 37 38) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) [2021-11-03 05:17:32,951 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-11-03 05:17:32,951 INFO L860 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-11-03 05:17:32,951 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2021-11-03 05:17:32,951 INFO L853 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) (and (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~x~0 1))) [2021-11-03 05:17:32,951 INFO L857 garLoopResultBuilder]: For program point L34-4(lines 34 43) no Hoare annotation was computed. [2021-11-03 05:17:32,952 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 05:17:32,952 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-03 05:17:32,952 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-11-03 05:17:32,952 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-11-03 05:17:32,955 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 05:17:32,956 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:17:32,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:17:32 BoogieIcfgContainer [2021-11-03 05:17:32,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:17:32,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:17:32,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:17:32,969 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:17:32,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:17:17" (3/4) ... [2021-11-03 05:17:32,972 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 05:17:32,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-03 05:17:32,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-03 05:17:32,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 05:17:32,982 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 05:17:33,019 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 05:17:33,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:17:33,020 INFO L168 Benchmark]: Toolchain (without parser) took 15798.60 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 79.2 MB in the beginning and 84.4 MB in the end (delta: -5.2 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:17:33,021 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 115.3 MB. Free memory was 95.4 MB in the beginning and 95.3 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:17:33,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.42 ms. Allocated memory is still 115.3 MB. Free memory was 79.0 MB in the beginning and 92.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:17:33,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.29 ms. Allocated memory is still 115.3 MB. Free memory was 92.4 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:17:33,022 INFO L168 Benchmark]: Boogie Preprocessor took 18.73 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 89.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:17:33,022 INFO L168 Benchmark]: RCFGBuilder took 333.90 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 79.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:17:33,023 INFO L168 Benchmark]: TraceAbstraction took 15060.06 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 78.4 MB in the beginning and 87.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-11-03 05:17:33,023 INFO L168 Benchmark]: Witness Printer took 50.30 ms. Allocated memory is still 151.0 MB. Free memory was 87.5 MB in the beginning and 84.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:17:33,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 115.3 MB. Free memory was 95.4 MB in the beginning and 95.3 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.42 ms. Allocated memory is still 115.3 MB. Free memory was 79.0 MB in the beginning and 92.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.29 ms. Allocated memory is still 115.3 MB. Free memory was 92.4 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.73 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 89.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 333.90 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 79.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15060.06 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 78.4 MB in the beginning and 87.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * Witness Printer took 50.30 ms. Allocated memory is still 151.0 MB. Free memory was 87.5 MB in the beginning and 84.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 14.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 30 SDslu, 27 SDs, 0 SdLazy, 33 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=1, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 39 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 8.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 10 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 <= cond && x + z * y == z * x + 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (1 <= cond && x + z * y == z * x + 1) || (y == 1 && x == 1) RESULT: Ultimate proved your program to be correct! [2021-11-03 05:17:33,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016adfd8-a18c-4086-ba3a-230ba4f69b4d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE